import { NarikTreeview } from '@narik/ui-core';
import { Injector } from '@angular/core';
import { TreeNodeDatabase, TreeNode, NodeItem } from './tree-node-dataBase';
import { MatTreeFlatDataSource, MatTreeFlattener } from '@angular/material/tree';
import { FlatTreeControl } from '@angular/cdk/tree';
import * as i0 from "@angular/core";
export declare class NarikMatTreeview extends NarikTreeview {
    private database;
    newNodeTitle: string;
    _selectedItem: any;
    set selectedItem(value: any);
    get selectedItem(): any;
    nestedNodeMap: Map<NodeItem, TreeNode>;
    parentNodeMap: Map<NodeItem, NodeItem>;
    treeControl: FlatTreeControl<TreeNode>;
    treeFlattener: MatTreeFlattener<NodeItem, TreeNode>;
    treeDataSource: MatTreeFlatDataSource<NodeItem, TreeNode>;
    constructor(injector: Injector, database: TreeNodeDatabase);
    transformer: (node: NodeItem, level: number) => TreeNode;
    private _getLevel;
    private _isExpandable;
    private _getChildren;
    hasChild: (_: number, _nodeData: TreeNode) => boolean;
    initParentMap(menuItem: NodeItem): void;
    selectNode(node: TreeNode): void;
    addNode(selectedNode: TreeNode): void;
    deleteNode(selectedNode: TreeNode): void;
    dataSourceChanged(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<NarikMatTreeview, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<NarikMatTreeview, "narik-mat-treeview narik-treeview", never, { "newNodeTitle": "newNodeTitle"; }, {}, never, never>;
}